- integer parameters can be configured using the following directives:
quic_max_idle_timeout
quic_max_ack_delay
quic_max_packet_size
quic_initial_max_data
quic_initial_max_stream_data_bidi_local
quic_initial_max_stream_data_bidi_remote
quic_initial_max_stream_data_uni
quic_initial_max_streams_bidi
quic_initial_max_streams_uni
quic_ack_delay_exponent
quic_active_migration
quic_active_connection_id_limit
- only following parameters are actually sent:
active_connection_id_limit
initial_max_streams_uni
initial_max_streams_bidi
initial_max_stream_data_bidi_local
initial_max_stream_data_bidi_remote
initial_max_stream_data_uni
(other parameters are to be added into ngx_quic_create_transport_params()
function as needed, should be easy now)
- draft 24 and draft 27 are now supported
(at compile-time using quic_version macro)
The ngx_quic_parse_frame() functions now has new 'pkt' argument: the packet
header of a currently processed frame. This allows to log errors/debug
closer to reasons and perform additional checks regarding possible frame
types. The handler only performs processing of good frames.
A number of functions like read_uint32(), parse_int[_multi] probably should
be implemented as a macro, but currently it is better to have them as
functions for simpler debugging.
Cleanup in ngx_event_quic.c:
+ reorderded functions, structures
+ added missing prototypes
+ added separate handlers for each frame type
+ numerous indentation/comments/TODO fixes
+ removed non-implemented qc->state and corresponding enum;
this requires deep thinking, stub was unused.
+ streams inside quic connection are now in own structure
All code dealing with serializing/deserializing
is moved int srv/event/ngx_event_quic_transport.c/h file.
All macros for dealing with data are internal to source file.
The header file exposes frame types and error codes.
The exported functions are currently packet header parsers and writers
and frames parser/writer.
The ngx_quic_header_t structure is updated with 'log' member. This avoids
passing extra argument to parsing functions that need to report errors.
+ support for more than one initial packet
+ workaround for trailing zeroes in packet
+ ignore application data packet if no keys yet (issue in draft 27/ff nightly)
+ fixed PING frame parser
+ STREAM frames need to be acknowledged
The following HTTP configuration is used for firefox (v74):
http {
ssl_certificate_key localhost.key;
ssl_certificate localhost.crt;
ssl_protocols TLSv1.2 TLSv1.3;
server {
listen 127.0.0.1:10368 reuseport http3;
ssl_quic on;
server_name localhost;
location / {
return 200 "This-is-QUICK\n";
}
}
server {
listen 127.0.0.1:5555 ssl; # point the browser here
server_name localhost;
location / {
add_header Alt-Svc 'h3-24=":10368";ma=100';
return 200 "ALT-SVC";
}
}
}
New files:
src/event/ngx_event_quic_protection.h
src/event/ngx_event_quic_protection.c
The protection.h header provides interface to the crypto part of the QUIC:
2 functions to initialize corresponding secrets:
ngx_quic_set_initial_secret()
ngx_quic_set_encryption_secret()
and 2 functions to deal with packet processing:
ngx_quic_encrypt()
ngx_quic_decrypt()
Also, structures representing secrets are defined there.
All functions require SSL connection and a pool, only crypto operations
inside, no access to nginx connections or events.
Currently pool->log is used for the logging (instead of original c->log).
- events handling moved into src/event/ngx_event_quic.c
- http invokes once ngx_quic_run() and passes stream callback
(diff to original http_request.c is now minimal)
- streams are stored in rbtree using ID as a key
- when a new stream is registered, appropriate callback is called
- ngx_quic_stream_t type represents STREAM and stored in c->qs
- now NEW_CONNECTION_ID frames can be received and parsed
The packet structure is created in ngx_quic_input() and passed
to all handlers (initial, handshake and application data).
The UDP datagram buffer is saved as pkt->raw;
The QUIC packet is stored as pkt->data and pkt->len (instead of pkt->buf)
(pkt->len is adjusted after parsing headers to actual length)
The pkt->pos is removed, pkt->raw->pos is used instead.
